/Engine/Source/Runtime/Landscape/Classes/LandscapeProxy.h
Invalidate the precomputed grass and baked texture data for the specified components
static void InvalidateGeneratedComponentData ( const [TArray](API\Runtime\Core\Containers\TArray)< [ULandscapeComponent](API\Runtime\Landscape\ULandscapeComponent) * > & Components, bool bInvalidateLightingCache )